Public Health Bulletin

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Summer anophelines are A. guadrza#39;maculatus; fall anophelines mostly A.
cruciam. ... proved better to have a main ditch, preferably just inside and parallel
to the dike, with parallel laterals spaced 200 to 400 feet apart, connected at aquot;
upper ends by a seepage ditch following the foot of the hill, as shown in the
above diagram.

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Public Health Bulletin

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- 1920

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